TaskFactory.FromAsync<TResult> Method (Func<AsyncCallback, Object, IAsyncResult>, Func<IAsyncResult, TResult>, Object, TaskCreationOptions)
Creates a Task<TResult> that represents a pair of begin and end methods that conform to the Asynchronous Programming Model pattern.
Assembly: mscorlib (in mscorlib.dll)
public Task<TResult> FromAsync<TResult>( Func<AsyncCallback, object, IAsyncResult> beginMethod, Func<IAsyncResult, TResult> endMethod, object state, TaskCreationOptions creationOptions )
System.Func<AsyncCallback, Object, IAsyncResult>
The delegate that begins the asynchronous operation.
An object containing data to be used by the beginMethod delegate.
Return ValueType: System.Threading.Tasks.Task< >
The created Task<TResult> that represents the asynchronous operation.
The type of the result available through the Task<TResult>.
The exception that is thrown when the beginMethod argument is null.
The exception that is thrown when the endMethod argument is null.
The exception that is thrown when the creationOptions argument specifies an invalid TaskCreationOptions value. The exception that is thrown when the creationOptions argument specifies an invalid TaskCreationOptions value. For more information, see the Remarks for FromAsync
This method throws any exceptions thrown by the beginMethod.
Available since 8
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Available since 5.0
Windows Phone Silverlight
Available since 8.0
Available since 8.1